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PAL20L8AJC

Manufacturer: NS

Progammable Array Logic Series 24 (PAL Series 24)

Partnumber Manufacturer Quantity Availability
PAL20L8AJC NS 836 In Stock

Description and Introduction

Progammable Array Logic Series 24 (PAL Series 24) The **PAL20L8AJC** from National Semiconductor (NS) is a programmable array logic (PAL) device designed for high-performance digital logic applications. As part of the PAL family, it offers a flexible and efficient solution for implementing custom combinational and sequential logic circuits.  

Featuring 20 inputs and 8 outputs, the PAL20L8AJC is built with a fixed OR array and a programmable AND array, allowing designers to create tailored logic functions. Its architecture supports both combinatorial and registered outputs, making it suitable for a wide range of applications, including address decoding, state machine control, and interface logic.  

The device operates with standard TTL voltage levels and provides reliable performance with low propagation delays, ensuring efficient signal processing. Its one-time programmable (OTP) nature ensures secure, non-volatile storage of logic configurations.  

The **PAL20L8AJC** is housed in a ceramic dual in-line package (DIP), offering durability and ease of integration into existing circuit designs. While newer CPLDs and FPGAs have largely replaced PALs in modern systems, this component remains relevant for legacy designs, prototyping, and educational purposes.  

Engineers value the PAL20L8AJC for its simplicity, deterministic timing, and cost-effectiveness in low-to-medium complexity logic implementations. Its legacy status underscores its historical significance in the evolution of programmable logic devices.

Application Scenarios & Design Considerations

Progammable Array Logic Series 24 (PAL Series 24)

Alternative Part Number

  • TIBPAL20L8-25CNT --: Pin-compatible PAL20L8 device from TI's TIBPAL series with equivalent 20L8 architecture and 25 ns speed grade, suitable as a direct functional replacement.
  • PAL20L8ACNT --: Same 20L8 programmable array logic function in a DIP package, offering equivalent logic capacity and compatible programming.
  • GAL20V8B-25LP --: Generic array logic device that emulates the PAL20L8 function, electrically erasable and reprogrammable, commonly used as a drop-in replacement for obsolete PAL parts.
  • TIBPAL20L8-15CNT --: TI's pin-compatible PAL20L8 replacement with 15 ns speed, same 24-pin DIP package and 20L8 architecture, widely available and directly substitutable.
  • PAL20L8BCNS --: AMD second-source PAL20L8 device with identical 20-input 8-output AND-OR array and 24-pin DIP pinout, suitable drop-in replacement for the NS part.
  • GAL20V8B-15LP --: Generic array logic device that can emulate the PAL20L8 function, offering a flexible modern alternative when exact PAL parts are obsolete.
  • TIBPAL20L8-15CNT --: TI's pin-compatible PAL20L8 replacement with similar 20L8 architecture and 15ns speed, widely available and directly interchangeable in most sockets.
  • PAL20L8BCNS --: AMD second-source PAL20L8 device with matching 24-pin DIP pinout and equivalent logic, a common drop-in substitute for National Semiconductor parts.
  • GAL20V8B-15LP --: Generic array logic device that can emulate the PAL20L8 function, offering a flexible reprogrammable alternative when the original fuse-programmable part is unavailable.

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